Madigan's influence on the waist is not great. What really affects him is that he likes to break through the pull rod, and there may be fierce physical contact in the process of pulling the rod. He often throws the ball in the process of losing balance, which will increase the pressure on his waist for a long time, and other factors will lead to waist injury ~

The reason why we usually have a backache when practicing dry pulling is because we have never practiced waist at all. Those NBA stars have their own training plans, and we can't be as standardized as McGrady, so there will be mistakes in methods ~